Air-heating device for fireplaces



April 3, 1948. A. B. AUSTIN 2,439,503

AIR HEATING DEVICE FOR FIREPLACES Filed Nov. 12, 1945 4 sheets sn et 1 n Inve nbpr-r.

ALber-f IB- Aushn worm;

April 13, 1948. A. B. AUSTIN 2,439,503

AIR HEATING DEVICE FOR FIREPLAGES Filed Nov. 12, 1943 4 Sheets-Sheet 2 Albert B. Austin.

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April 13, 1948 A. B. AUSTIN AIR HEATING DEVICE FOR FIREPLACES Filed Nov. 12, 1945 4 Sheeiis-Shet 4 Patented Apr. 13, 1948 UNITED STATES "PATENT OFFICE AIR-HEATING DEVICE FOR, FIREPLACES Albert B. Austin, Minneapolis, Minn. Application November 12,1943, Serial No. 509,975

12 Claims. (01. 126-121) 1 This invention relates to a fireplace heater, and particularly to a structure of air heater for a fireplace arranged to be installed in fireplaces of different sizes. It is well known that fireplaces are rather inefiicient as heating means for the room in which they are located. The efliciency of the fireplace can be greatly increased if means are provided in conjunction with the fireplace for causing a circulation of air in the room.

It is an object of this invention to provide an air heater for a fireplace having plates spaced from the rear and side walls of the fireplace with a top portion extending to said walls so that a chamber is formed between said plates and the walls of the fireplace together with means forming passages along the side walls whereby a circulation of air will be produced through said passages.

It is a further object of the invention to provide such a structure as set forth in the preceding paragraph, the said top portions of said plates being arranged so that they can respectively be fitted to engage the walls of said fireplace, a sealing and binding material such as cement or concrete preferably being placed on top of said top portions engaging the same and the walls of said fireplace.

It is another object of the invention to provide an air heater for a fireplace comprising a plate extending substantially vertically along and spaced from the rear wall of the fireplace, plates extending substantially vertically along and spaced from the side walls of the fireplace respectively, said latter plates having portions overlapping said first mentioned plate so that they may be moved toward or from each other to fit fireplaces of different'widths, all of said plates having top portions extending toward and engaging the walls of said fireplace whereby a chamber is formed between said plates and the walls of said fireplace together with means forming passages along said side walls of the fireplace, which passages are open at their front ends and communicate with said chamber at their rear ends so that a circulation of air is caused therethrough.

It is still another object of the invention to provide an air heater for a fireplace comprising a plate extending substantially vertically alongand spaced from the rear of said fireplace, rear side plates extending substantially vertically along and spaced from the side walls of said fireplace respectively, said latter plates having portions overlapping said rear plates, front side plates extending substantially vertically alon i I and spaced fromfthe side walls of said fireplace respectively and overlapping said rear side plates whereby said front and rear side plates maybe moved toward and from each other to fit fireplaces of difierent widths and said front side plates may be moved relatively to said rear side plates to fit fireplaces of different depths, all of said plates having top portions extending toward and engaging the walls of said fireplaces respec tively so that a chamber is formed between. said plates and the walls of said fireplace together withmeans forming passages in said chamber along the side walls of said fireplaces, a vertical partition preferably being used extending from said rear plate to the wall of said fireplace substantially centrally of said rear plate.

It is still another object of the invention to provide a structure such as set forth in the preceding paragraph together with simple and emcient' means for fitting the heater to fireplaces of difierentheights.

These and other Objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying. drawings in which like reference characters refer to similar parts throughout the several views and in which-- i Fig. 1 is. a view in front elevation of an air heater for a fireplace embodying the present invention; U

Fig. 2 is a top plan view of said heater showing the walls of the fireplace in horizontal section;

Fig. 3 is a horizontal section taken on line 3-3 of Fig. ,1 as indicated by the arrow;

Fig. 4 is a partial horizontal section similar to Fig. -3 shown on an enlarged scale;

Fig. 5 is a vertical section taken substantially on line 5-5 of Fig. 2. as indicated by the arrow;

Fig. 6 is a vertical section taken substantially on line 6- -6 of Fig. 2 as indicated by the arrow;

Fig. '7 is a partial view partly in horizontal sectionand partly in plan taken substantially on line l--|' of Fig. 9;

Fig. 8 is a horizontal section taken substantially on line 8-8 of Fig. l;

' Fig. 9 is a vertical section taken substantially on line 99 of Fig. 7.

' Fig. 10 is a partial perspective view of the front upper portion of said heater;

Fig. 11 is a vertical section taken substantially on line Ii-ll of Fig. 3; v

g. 12 is a view in vertical section of the rear top ortion of the heater illustrating a method of installation; a i

Fig. 13 is a View in front elevation showing a modification;

Fig. 14 is a vertical section taken substantially on line |.4|4 of Fig. 13 as indicated by the arrow; i

Fig. 15 is a horizontal section through the wall of the fireplace as used in connection with Fig. 13, certain parts being indicated in dotted lines, said section being taken substantially on line ||.5'

of Fig.

Fig. 16 is a vertical section taken on line |6| 6 of Fig.

, tending parallel thereto to a point flush with the Fig. 17 is a horizontal section showingamodification;

Fig. 18 is a horizontal section taken; substam' tially on line |8|8 of Fig. 13.as.indicated.by. the arrow;

.end of plate 3|.

positively heldinplace by members 33 shown as headed. bolts ,.extending through plates 3| and 35 and into expansion nuts 39 set into the rear wall of thefireplace.f While various types of nuts Fig. 19 is a view in front elevation of aiturtlrerr modification, some parts; being removed;

Fig. 20 is a view in horizontal section taken substantially online {Ze -200i Fig. 19* as-indicatedby the arrow;

Fig. 21 is a vertical. sectiorr taken substantially on line El -2'1 of Fig. 19;

Fig. 22 is a perspective view: of. a unitary heater structure;

Fig. 23 is a vertical section. taken. substantially on 1i116*23-23- 0ff Fig. 20- showing: also= the. filf-- place wall;

Fig. 24' is a. partial vertical-section taken sub.- stantially on line- 24-24 of Fig; 22.- also. showing the fireplacewall; and.

Fig. 25- is a partial horizontal section. showing.

amodification. i

Referring to the drawings,. particularly Figs. 1 to 12, a fireplace 3B is shown having: the usual chamber, the same having. side. walls. a and a rear wall 3%. V i

In accordance with the present invention. a plate 3| is provided and while thismay be made of any suitable material, it is preferably made of comparatively thin sheet. metal. Plate 3|- extends substantially verti'call'yi n a location extending along'and spaced. from the rear wall 3% of said fireplace. Said rear wall 30!) has its upper portion extending somewhat forwardly as shown in- Figs. 5 and 6. Plate 3|. extends so as to be substantially parallel to said rear wall. Members 32 shown as narrow strips of metal having their ends bent upwardly at right angles,

are provided and these rest on the fioorof the fireplace having their upturned ends engaging the inner side of plate 3| and the rear wall of said fireplace respectively. Members 32 act as spacers to definitely locate the bottom of plate 3| and insure that it will be held in the desired position. Plate 3| has a top portion 3m and while this could be variously formed, in the embodiment of theinvention illustrated it is shown as having its front edge bent downwardly to engage plate 3'1' and i twill be secured to-plate 3| in any suitable manner as by welding. Portion 3|a. at its rear end is bent downwardly to engage and extend along the rear wall for a short distance. Plate 3| preferably is formed toextend a short distance above portion 3| a as shown in Fig. 6, and a body of material 33 such as cement or concrete is placed on top of portion 3|a, the same engaging the rear wall 30bas well as the projecting upper end of plate 3|. A vertical partition 34 is provided which extends from plate 3| to the rear wall of the fireplace and while this could be variously formed, in the embodiment of the invention illustrated it is shown as comprising a channel member having its ends or flanges enmight .be used, nuts 39 are shown as having a slit or slot at their top portions as indicated in Fig. 4. Rear side plates 4|" are provided and these extend from the floor of the fireplace substantially vertically along; andspaoed from the side walls. Said plates 4| haverear 38a. of" the fireplace. portions 4-l-a-bent to extend parallel to plate 3| and disposed in the channels 31. Said portions 4| a will substantially fitchann'el's 31' andwill be sl'idabl'e therein. Front side plates 42 are also provided extending substantially vertically along and spaced from the sidewalls of the fireplace.

Plates. 4| have top portions 4|b which extend from the inner sides thereof to the sidewalls of the fireplace, and while these'might be variously formed, the embodiment of the invention illus trated they are shown as. having outer. portions bent to extend along and be-securedi to plates 4| in any suitable manner as by welding. The other ends of plates MD are bent downwardly to extend along the side walls. of said fireplace for a short distance; extend somewhat above portions 41b as shown in Fig. l1 and a body of material 451 such as, cement or concrete is placed on top of portions 4 ID, the same extending from plates 41 to the side walls of the fireplace. The material 33 and 45 as shown, preferably has its greatest depth at the fireplace wall and decreases in. depth toward its outer endl- Plates 42 have top portions 4% extending to the side walls ofithe fireplace respectively. Plates 42- have secured'thereto adjacent their inner ends in any suitable manner as by welding, plates 45. Plates 46 are offset to extend parallel to plates 42 to a point somewhat beyond the ends of plates 42', thus forming channels 48-.

The outer'ends of plates 4| are disposed in channel's 48, being slidable therein and substantially fitting therein. Plates. 42 have spacing members 49 secured thereto at their bottoms, said members 49 being substantially identical with members 32, the same engaging plates 42 with their upturned ends and also engaging the side walls Mia-with their upturned ends.

bolts 50. extending through plates 42' and 46 and threaded into nuts in the fireplace wall similar 42 and 4| respectivelyxto the side walls of the fireplace and as shown 'inFig. 5, plates 52 are Channels 31 are thus formedbetween plate 3| and said plates 33. Plate 3| is Preferably the upper ends of plates 4| P1ates'42 and thus plates 4|, are held positively in place by the headedand lower passagesbyDa-rtitions |.and. 52, which passages are in communication inisaid chamber at the rear portion thereof. .A, n'1'ember54 is provided having a side portion 54;w ich'extends along and. engages] the. innersidebi plate 42. Member 54 has a horizontal top portion and also a portion 54b bent' downwardly. to,:engage and extend along. the. side wall ofjthe fireplace'.

Member. 54 will. be adjusted. to positionin the installation of thQdGVlCB .and beYheld. in the desired position by a member 55 which maybe a smallheaded and nutted member56 is provided having a side -portionjta engaging the inner side of wall 55a and extending to the inner side of plate 42.. Member '56 has a top portion, the rear end of which will engage the front end of portion MI) and the-front end of which will engage the underside ofthe horizontal portion of member 54; Member 56 also has a portion 56b'bent'downward for engagement with and to extend along the side wall of the fireplace. Member 56 will be held in the desired position by a member 51 whichmay be a small'headed and nutted bolt. Member *54 can thus be adjusted at the time of installation to the desired position at the front of the fireplace. 56 are located the material 45 which overlies top portion 4| 1), will beplaced on the top horizontal portions of members 54 and 56; are indicated in Figs. 5 and 6. It will be seenthat the top portions Ella and 4|b and top portio'ns*4|b and42b overlap and are relatively movable with the plates carrying the same. This is clearly shown in Fig.2. -1

Plates 42 extend forwardly to aline flush with the front of saidfireplace and angle plates 50 are provided having portions extending along and engaging the front of the Ifi'i'eplace an'd portions at right angles thereto engaging the outer sides of plates 42. wThese .platesTBll'have openings 60a therein and while these mightbe variously .formed, inthe embodimentof the invention illustrated theyvare shown as triangular 6|. being held in placebyaheaded bolt-63 ex-- tending therethrough, betweenjthe two parts of plates 60. A washer B5,underlies the head of.

bolt 63. Bolt 63textends through plate BI and through an angle member fifi extending vertically and overlapping plate 60, the. same having one flange; engaging the inner side of the adjacent plate 42 and welded thereto. Bolt; 63 isprovided with a suitable nut 61, which will preferably be welded toangle member '66."; Withthe described structure plates 60 can be positioned a greater or lesser distance apart and be held in the desired position by. bolts 63 and members 66. Members 10 extend across the top of the fireplace, having their outer ends engaging the inner sides of plates 60 and having' theirtop edges fiushwith the top edges of plates BOQQMembers 10 are of rectangular form. in vertical cross section. and have upper flanges 10a. As shownin Fig. 7, members 10 at their outer ends fit over inwardly After members 54 and Widths, depths and heights.

. 6 projecting lugs 60b formed on the upper ends of upper plates 60 so that the outer surfaces of members Ill are flush with the outer surfaces of plates 60. Members in are provided with a horizontal row. of triangular openings too, similar to openings GOato give a harmonious and ornamental appearance. Members 10 have downwardly extending tongues .Hlc extending into apertures in the lugs 60b and are thus supported thereby. Members 10 are spaced at their inner ends and are overlaid by a plate H of rectangular form and of slightly greater width than members 79. Headed bolts I3 extend between members '10 and through a channel member I4 extending between and engaging the rear sides of members l0. Washers l5 underlie the heads of bolts 13 and said bolts are provided with suitable nuts 16 in the rear of channel 14. With the described construction it will be seen that plates Hi can be spaced a greater or smaller distance and will be held in adjusted position by plate 1|, channel 14 and bolts 13.

With the described construction the fireplace heater can be installed in fireplaces ofdifferent The plate 3| will be placed in position and the top portion 3la thereof will have its free end cut so that it may be bent and disposed as shown in Figl 6. Con-- siderable stock will be left on the end of the top plate 3|a so that plate 3| may be positioned the desired distance from the rear wall. Said free end of portion 3|a will be bent at the time of installation to properly. engage the rear wall. This will also be true of top portion MI) and the top portions of. members 54 and 56 as will spacing members 32. 49, partitions 34and partitions 5| and 52. Plate 3| can be secured in position by bolts 38 which will be secured as stated, in the nuts 39 suitably embedded in the wall of the fireplace. Side plates 4|1 and 42 will now be ad justedby moving portion 4|a in channel 31! to suit the width of the fireplace. Plates 42 can then be moved relatively to plates 4| to bring their front ends flush with'the front of the fireplace. Members 54 and 56 can then be adjusted to suit the height of the fireplace at the front thereof; Fireplaces vary considerably as to the top wall just above the front opening. After the 'top portions 3|a, MD and the top portions of members 54 and 56 are positioned the cement or concrete 33 and 45 will be placed in position. This of course,.wil1 be placed in position while it is wet or fiuent and the material is such that A it is adapted subsequently to harden. The ma* terial will engage the inner side of the projecting upper ends of plates 3| and 4| so that should material or .anyfpartthereof. loosen it will not move forwardly into the fireplace opening. The

plates 60 and the members 1'5 and ll will now heated by the fire in the fireplace. This will ngs filla. A'cjirc v .di hislca es; w m semen; the. mom A great deal more fisfusu'allyl quit; but immediately in i 'Ifhiscondition isenh he. res nt nv io he present; 'in ie'nt isfverylefiicientin. the use of 'rnatei al as the, circulating chamber is formed at one sid ebyf'the wa er the fireplace. The wall; of the, placethus functions differently than if. anfen fie metal casing were used, one side,oflwhichieiitehde'd alongthe wall of the fire; place asin "applican'ts' device shown in his prior o-.- i1 -ins apelicat ii- S.- 36 68, fi d Octoe 9 b,. matu ed n piP te N01 2. 6

rante'ddflloveniber 1d, 1944 Furthermore, the Qfi thef replace elqf e bs. n er s h and forms a 'milch "more desirable side for the chamber than would' a metal plate. In some cases; d ne to the heating; of, the metal, in the construction" shown in'said prior application, the circulation appearsto' become impeded for some reason not clearly apparent. This objection is entirely oyercome by the presentstructure. The present structure can 'befimuch more easily adjusted and. conformed tov fireplaces 'of different sizes: and, requires a great deal lessv material than applicants prior structure also and can thus be mad e at a much lower cost. 7

In the. modification shown in Figs. 19 to '25 a form oi the device is shown comprising a unitary device 33;." Thisgfprm of device is designed to be placed in fireplacewhcn the: same is originally built. Member fifl includes the rear plate a and the. side plates fillfl zwhich correspond with the plates 3i and ll and 42 already described. The member 8}] also has the top portion 890 corresponding to portion 3l a already described and also hasthepartitions 80d corresponding to smear and52 already desQribed. Rear plate Std also hasexten'din g rearwardly therefrom a vertical partition Eljie corresponding to partition While. por i n w 11 a d w mi ht be va i s y formed or at a hed. i the emb d me of the invention illustrated: they are shown as having ne or o nt a a n le w ch 12 tion is welded to plates 80a and 891) respectively. The member 56 will be set into the fireplace as in dicated in Fig. 20; normally occupying the place that the fire brick or facing brick usually occupy. As shown' in Fig. 20, the front edge of member will terminate in the rear of the front portion or brick 81 of the fireplace and flanged conduits 32 will communicate, with the passages formed by side plates 8th, top. plate, 800, the side Wall 83 of the fireplace Q3, and the partitions see. Conduits 82' may be formed with grids 8.2a as shown in Fig. 19. Preferably cement, concrete or some similar material $4 adapted to harden after being put infpl'ace; will be used in the rear of front'portions 8i and between the same and the'si'de walls 8%. -Erefr'ably some material 85 will be inserted in the fireplace where the same is engaged by top plate 801: andpartitions 80, which iiiateriafwillf some ex ansio of as are 1"? re .ri iisiiii ee in' as eins-a e eiaee mes i n fir n. t e. fireplace.

ltllisrwell nown tliatwiththeordinary injFie, 3,

8M, and the wall of the fireplace ateach side;

m rou h emem er tl hesides i ielirea2; will'jbedispo'sed' in slich openings, "Th

;the device is installed. Such a constructi descrilcied in connection with Figs. 1 tefiz.

fireplace; briclg. can, be. placed on top tion' 80,c ",and. the to portiqnjof vano provided at the top a v sages formed by partitions. '8Ddfar'id tlie co and sewer em g's'rdr; the; aii will. e11 the side" ii-the fireplace insteadof a; t

\ The operation of. th' jstructui'e shown; in Efigs 1 the 54 s si fisi ai al i lie'lhafi alieedy en cr bed 3 ember w kbei e e fi n a t e. nepl ee and this. w l w se Mir-e 1; t a f r which. ai w l pa s to. t e. Q m be d wi l pa s das ar l bene th p r on nd e le a eb ween th menta place.

It m yb a e n s m ta es tqnemovethe. e. b k or facin br ck. in the fi e ace before is ow s- 13 t t- .8.- The d vi u ed 1491. cases is the, same. as that described in connection with Figs. 1 to 12-, except that. frnntnlates. ,42 terminate at. the. surface SDaof the fineplace.

which is in the rear of the front portion or front facing-brick. at the top and, bott m nortions. of the fireplace theifront portion or. front facing brick 9011Wi1lbe. removed. as shOIWIl. at the left, hand. part. of, the section in, Fig. 18,. Memr' hers ,9 l- .havingi flanged front grid portions Ma.

will be provided,th same" having their flanges extending beyond the openingsfillc and having the side flange 91b. extending. inwardly along "the front part of the. side plates 4'2. These'meiiibers 9'] can be secured.by.headed and fiutted bolts a:

to' the front flanges of angles 93"having inwardly extending flanges secured to plates 'kzin any suitable manner as by welding. In a fireplace having side portions with sidewall surfaces 90E the openings at'the 'topand bottomof th'fir arrangedas Shown in Fig ji 14', thcinent ihat name being used similar to the mitten-arts Show; n Figs.'5 and 6: arenrea xtefiayte the surface!!! in the rea'i" of 'the'front person gut of the firepnce sq that there is no; necessity for any grid platesu'ch as plate'llj eiiter'ldirlg 'aloii'g the top'of thefir'eplace' The usual" we; f 95of 'the firplace isretained. 'The been vice shown in Figs. '13 to '18 can be a'diiu suit the fireplace space justthe same 9% i WZIFQIT'SYQI Wi lie i earwe y is..

- simpler.

the, partitions BI and 52 to the chamber at the rear of the rearplate and will then pass forwardly inthe passages above partitions and 52 and outatthe upper members 9i.

Efrem the above description it will be seen that I-have provided a novel, quite simple and very efiicient structure oifireplace heater. The device is constructedand arranged to be installed infireplaces already built or those originally built with the heater. A great savingof material is made by having the plates just at the inner part of the chamber so that the outer Walls or the chamber formed are constituted by the fireplace walLqNot only is a great saving of material made, but the installation is made easier and The fireplace wall due to its thickness in construction, absorbs considerable heat and this causes the deviceto function ina different manner than if the chamber formed hadthe metal plates on all sides thereof. The wall does not tend to become locally heated but becomes quite uniformly heated and thus causes a unis form and perfect circulation. The circulation is not interfered with at any time by any local heating of the metal. The fireplace wall also ,retainsits heat for some time sothat there will be a circulation of air even after the fire in the fireplace has died down or become extinguished. The device can be easily and quickly installed and when in place, forms a device of pleasing and ornamentalappearance. The efficiency of the fireplace is immensel increased by the use of the device and the roomto beheated is quite uniformly heated. The device has been demonstrated in actual practice and found to be very successful and eificient.

It will of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts, without departing from the scope Qfapplicants invention, which generally stated, consists in a device capable of carrying out the objects above set forth, in the-parts and combinations of parts disclosed and defined in the appended claims.

' What is claimed is:-

' 1. A device for heating a room from an open front fireplace having rear. and sidewalls havingin combination, a plate extending substantially vertically along andspaced from the rear wall of a fireplace, said plate having a top portion extending toward and engagingsaid rear Wall, plates extending substantially vertically along and spaced from the side Walls of said fireplace respectively and having top portions extending toward and engaging said side walls, said side plates having portions respectively overlapping the ends of said first mentioned plate whereby all of said plates form a chamber between the same and the walls of said fireplace, and said side plates may be movable toward and from each other to ,suit fireplaces of difierent Widths, a partition extending from said last mentionedplates intermediate their heights, to the side walls respectively, thus forming upper and lower passages, said passages being open at the front of the fireplace and communicating in said chamher at their rear ends and means for holdingsaid plates in position. V

l 2; .A- device forheating a room from an open front fireplace having rear and side walls-having in combination, a rear plate spaced from and extending along the rear wall of said fireplace, the same having a top portion extending along and engaging said rear wall, reariside plates extending along and spaced from the side walls respectively of said fireplace, said latter, plates having portions overlappingthe ends of said rear plate, front side plates spaced from and extending along the side walls of said fireplace respectively, the

same overlapping said rear side plates, said rear and front side plates having top portions extending to and engagingthe side walls of said fireplace wherebya chamber isformed between all of said plates and the walls of said fireplace, said rear and front side plates having partitions intermediate their heights extending to and engaging the side walls of said fireplace respectively, said side plates being movable towardand from each other to fit fireplaces of different widths-and said front side plates being movable forwardly and rearwardly to suit fireplaces of different depths.

3. A device for heating a room irornan open front fireplace having rear and side walls having in combination, ya rear plate spaced from and extending, along the rear wall of said fireplace having its i ends spaced from the side walls thereof, plates secured adjacent one of their ends respectivelyto said. rear plate adjacent the ends thereof and having partsspaced slightly from said rear, plate to form respectively channels between the same and said rear plate, side plates extending along and spaced from the side walls of saidfireplace," said side plates being bent at their ends and having portions disposed in and movable in saidchannels, said side plates thus being movable toward and from each other, said rear and side plates having top portions extending to and engaging the rear and sidewalls of said fireplace respectively whereby a chamber is formed between said rear and side plates and top portions and the walls of said fireplace, said side plateshaving partitions extending therealong and toisaid side walls, to form upper and ,lower passages along said side Walls,

said passages communicatingat their rear ends in said chamber and beingopen at their front ends. i

4. A device forheatingaroom from, anopen front fireplace having rear and sidewalls having in combination, a. rear plate spaced from and extending alongrthe rear wallroi said fireplace having its ends spaced from. the side walls thereof, plates secured to said :rear ,plate adjacent the ends thereof and havingyportionsspaced slightly from said rear plate to form respectively channels between the same and said rear plate, rear side plates extending ,alonga'nd spaced from the side walls of said, fireplace, the. same. being bent at their ends to'have. portions extending parallel to said rearplate and disposedinsaid channels,

said rear. side platestthus being movable toward and from each other, (front side plates extending along. and spaced (from said side walls, the same havingplates secured thereto adjacent their rear ends and having portionszspacedslightly therefrom to. form channelsurespctively, said rear side plates having their front portions disposed in said channels, said-front side plates being movable toward and from the front of said fireplace, said rear, rear'sideand front side plates having top portions extending to and engaging the rear and side wallsof said fireplace respectively where by a chamber is formed between all of said plates and'the walls of saidfireplace, said rear and front side plates having partitions secured thereto intermediate their heights extending to and engaging said side walls respectively, said partitions overlapping and forming upper and. lower 11 passages along saidsid'e Walls which communicate in said chamber at their'rea'r ends and are open at theirfront ends, and means for holding said plates in the desiredassembled-position.

5. A device for heating a room [from an open front fireplace having rearand side walls having in combination, a piste extending along and spaced from the side-wall of said fireplace, said plate having a top portion extending to and engaging the said side wall, a -s'econd plate having a substantially vertical portion extending along said first mentioned plate and having a top portion extending to and engaging said side Wall, said last mentioned topportion having one end engaging theend of saidfi'rst mentioned top portion and inclining upwardlyand forwardly therefrom, a third plate; disposed at'the front of said first mentioned plate having a' substantially vertical portion extending along said first mentioned plateand also said secondmentioned plate, said third plate having a; top portion extending to and engaging the side wallo'f the fireplace and engagedon itsun'derside by the other end of said second mentioned top portion, said plates forming a chamber with said side wall and means for holdingsaid plates in position. e

6; A device for heating-a room from-an open front fireplace having rear-and side walls having in combination, a plate extending alongand spaced from the side wall of said fireplace, said plate having a top portion'extending to and 'engaging said side Wall,- a' second platehaving a substantially vertical portion extending along said first mentioned plate andliaving a t'op-portion extending toa'nd engaging-said sidewall; said last mentioned top portion having its rear edge engaging the front edge of saidfirst mentioned top portion, a third plate disposed at the front of said first mentioned plate "having a'substantially vertical portion extending smug-said first mentioned plate and 'h'avi'ng a top-portion extending to and engaging said side wall-of the fireplace, said third plate being movable in installation relatively to said first mentioned-'plateto fit fireplaces of different heights, seesaw-seems plate being adjustable so that its top portion can extend from the top portion or said first mentioned plate to the top portion of'sal'd'thlird plate, and means iorholding'said plates in the desired ad'- justed position-whereby a chamber is formed between said plates and said'side wall of the fire place. i l

7. A deviceto be inserted in anopen' front fireplace, which fireplace hasrear and side walls, said i device havingplates extending alongand spaced from the rear and side Walls of Isaid fireplace, said platesrhaving top portions extending to and engaging, said rear and ltside walls respectively,

said plates .jand rear and side walls forming a chamber, partitions extendingbetweensaidplates and', said sideWallsand disposed :in planes substantially perpendicular to said plates and'slde walls and disposed quite a distance above the the bottom of saidzplates; saidpartitionsiorming pa ages a verandbelow the-same extendin t t r nt of said fireplace, algri l; plate extendin across the top, of, the, fireplace opening and grill p a e t nd ng V vertically, at ,caoh id o sai fireplace opening, and means connectedto said 1 2 place, s'aid platesliaving top portions extending toand-engagihg said; rear and side walls" respec tively, said plates and said rear and side walls 7 forming a chamber, said plate'extending along said rear wall bein'gextensible whereby sai'd plates extending along said side Walls may be moved toward and from each other to suitnreplaces of different Widths, means; adjacent thefrdnt Of the fireplace bywh'ichthe plates alongthe side walls may be moved to fit fireplaces of diifere'nt heights, grill plates extending across" the top or the fireplace opening at the oute'rsideoi said fireplace, means by which said grill plates may be moved to suit fireplaces of different widths, grill plates extendingalong the sides of said tireplace opening, andme'ans by which said last mentioned grill plates may be moved to-si-iit fireplaces of different heights.

9, A device ior heating-a room from an o en front fireplace having rear and side walls naving in combination, a member constructed and ar ranged to be disposed in saidfireplaoe, said itemher having plates extending along and-slibst'an tiallyflparallel tosaid rear and side trans and spaced from said walls respectively; said plates each having a top portion extending from adja' cent the tops thereof to said rear and side ta ls of said fireplace respectively whereby a chamber is formed between said plates and said walls-er said fireplace, said'plates which extend iehgsaia side walls having means intermediate thiiftps and bottom extending therefrom to and engag ing said side Walls (if Salli fireplace thl-ls f0" with said side Walls upper and lower pas f" along said side Walls; which oommuniate at man rear ends with the part of saidcharhber earnin ing along saidrearwall and are open to said room at their front ends, 1 7

1b. The stnictnre set iort'h in claim 9-, said plates extending along said side walls of said fireplace being movable toward and-"6min each other to. suit fireplaces of different Widths a 11; The structure set forth'in claim 9, said plates 'extendingalong said sidewalls of said" lireplace having overlapping portions whereby said portions can "be relatively 'moved parallel to said side walls to fit fireplaces of diflie'rent depths.

. 12'. The structure set, forth in claim 6, said plates having portions at the sides 'tn'ereo! respectively which are adjacent said side Wall or said fireplace bent downwardly to 'estendalong said side wall.

ERT B. Aos'rm.

streamers 'crrnn The roiiowin'gjrererenbes are er recurs in the file of this patent:

oniap sTAr'nfs arrears 

